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Pyrazole-Tethered Heteroditopic Ligands and Their Transition Metal Complexes: Synthesis, Structure, and Reactivity

✍ Scribed by Anuradha Mukherjee; U. Subramanyam; Vedavati G. Puranik; Thekke P. Mohandas; Amitabha Sarkar

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
231 KB
Volume
2005
Category
Article
ISSN
1434-1948

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✦ Synopsis

Abstract

Various pyrazole‐based P,N (2a–c) and N,N (3a–b) ligands have been synthesized. Using representative ligands, Ni^II^, Co^II^, Cu^II^, and Cu^I^ complexes have been prepared and structurally characterized by crystallography. During complexation of Co^II^ and Cu^II^ salts, the phosphane part of the P,N ligand oxidized to phosphane oxide. For N,N donor ligands, a dimeric chloro‐bridged Ni^II^ complex was obtained. Ni^II^ complex 4 is an active catalyst for ethylene oligomerization. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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